Patents by Inventor Joji Sasaki

Joji Sasaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10674908
    Abstract: A fundus imaging device includes an objective optical system formed of a plurality of eccentrically disposed mirrors, and an SLO optical system and an OCT optical system which irradiate a fundus with light from a light source via the objective optical system and receive fundus reflected light. The fundus imaging device further includes a correction mirror as a part of the objective optical system, or between the objective optical system and the SLO optical system or the OCT optical system. The correction mirror corrects an eccentric aberration which occurs due to eccentric arrangement of the plurality of mirrors.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: June 9, 2020
    Assignee: NIDEK CO., LTD.
    Inventors: Go Matsunobu, Joji Sasaki, Masaaki Hanebuchi
  • Publication number: 20180289260
    Abstract: A fundus imaging device includes an objective optical system formed of a plurality of eccentrically disposed mirrors, and an SLO optical system and an OCT optical system which irradiate a fundus with light from a light source via the objective optical system and receive fundus reflected light. The fundus imaging device further includes a correction mirror as a part of the objective optical system, or between the objective optical system and the SLO optical system or the OCT optical system. The correction mirror corrects an eccentric aberration which occurs due to eccentric arrangement of the plurality of mirrors.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 11, 2018
    Applicant: NIDEK CO., LTD.
    Inventors: Go MATSUNOBU, Joji SASAKI, Masaaki HANEBUCHI
  • Patent number: 9675243
    Abstract: An ophthalmic photographing apparatus is provided with a SLO optical system including a first optical scanner for scanning a laser beam to obtain a front image of an examinee's eye by the laser beam, a OCT optical system including a second optical scanner for scanning measurement light to obtain a tomographic image of the examinee's eye by use of interference between the measurement light and reference light, an optical path combiner for combining optical paths of the SLO optical system and the OCT optical system, an objective lens system placed between the optical path combiner and the examinee's eye, and a relay lens system placed between the second optical scanner and the optical path combiner. The second optical scanner is placed on a side closer to the relay lens system than a focal point distance of the relay lens is.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: June 13, 2017
    Assignee: NIDEK CO., LTD.
    Inventors: Joji Sasaki, Masaaki Hanebuchi
  • Publication number: 20160150953
    Abstract: An ophthalmic photographing apparatus is provided with a SLO optical system including a first optical scanner for scanning a laser beam to obtain a front image of an examinee's eye by the laser beam, a OCT optical system including a second optical scanner for scanning measurement light to obtain a tomographic image of the examinee's eye by use of interference between the measurement light and reference light, an optical path combiner for combining optical paths of the SLO optical system and the OCT optical system, an objective lens system placed between the optical path combiner and the examinee's eye, and a relay lens system placed between the second optical scanner and the optical path combiner. The second optical scanner is placed on a side closer to the relay lens system than a focal point distance of the relay lens is.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 2, 2016
    Applicant: NIDEK CO., LTD.
    Inventors: Joji SASAKI, Masaaki HANEBUCHI
  • Patent number: 8742161
    Abstract: There is provided a process for producing a bicyclo [3.1.0] hexane derivative represented by the formula (I) and a salt thereof including; causing an enzyme to act on an optically inactive compound represented by the formula (II) causing an asymmetric acylation reaction and a highly-stereoselective conversion to an optically active compound represented by the formula (III); and converting the compound represented by the formula (III) to the compound represented by the formula (I) or a salt thereof.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: June 3, 2014
    Assignee: Taisho Pharmaceutical Co., Ltd
    Inventor: Joji Sasaki
  • Patent number: 8618312
    Abstract: Production of a bicyclo[3.1.0]hexane derivative, useful as a metabotropic glutamate receptor modulator, becomes possible by a production method that includes converting a compound represented by Formula (II) into a compound represented by Formula (III) by reaction with an acyl group donor in the presence of a microorganism-derived enzyme, without using an expensive optically active trans hydroxy ester as a starting material and without employing a fluorination reaction requiring an ultralow temperature reaction. Furthermore, since asymmetric synthesis can be carried out in a stage closer to the final product, the production method is useful as a production method that can mass produce a bicyclo[3.1.0]hexane derivative.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: December 31, 2013
    Assignee: Taisho Pharmaceutical Co., Ltd.
    Inventors: Mitsuaki Hirotsuka, Joji Sasaki, Hiroaki Kamiyama, Motoko Oshida, Takaaki Ishii
  • Publication number: 20120232304
    Abstract: There is provided a process for producing a bicyclo [3.1.0] hexane derivative represented by the formula (I) and a salt thereof including; causing an enzyme to act on an optically inactive compound represented by the formula (II) causing an asymmetric acylation reaction and a highly-stereoselective conversion to an optically active compound represented by the formula (III); and converting the compound represented by the formula (III) to the compound represented by the formula (I) or a salt thereof.
    Type: Application
    Filed: November 18, 2010
    Publication date: September 13, 2012
    Applicant: TAISHO PHARMACEUTICAL CO., LTD
    Inventor: Joji Sasaki
  • Publication number: 20110065934
    Abstract: Production of a bicyclo[3.1.0]hexane derivative, useful as a metabotropic glutamate receptor modulator, becomes possible by a production method that includes converting a compound represented by Formula (II) into a compound represented by Formula (III) by reaction with an acyl group donor in the presence of a microorganism-derived enzyme, without using an expensive optically active trans hydroxy ester as a starting material and without employing a fluorination reaction requiring an ultralow temperature reaction. Furthermore, since asymmetric synthesis can be carried out in a stage closer to the final product, the production method is useful as a production method that can mass produce a bicyclo[3.1.0]hexane derivative.
    Type: Application
    Filed: November 19, 2010
    Publication date: March 17, 2011
    Applicant: TAISHO PHARMACEUTICAL CO., LTD.
    Inventors: Mitsuaki HIROTSUKA, Joji SASAKI, Hiroaki KAMIYAMA, Motoko OSHIDA, Takaaki ISHII
  • Patent number: 5474923
    Abstract: A method for introducing hydroxyl groups into vitamin D compound at the 1.alpha.- and/or 25-positions in the presence of a cyclodextrin compound by the use of a reaction mixture containing a microorganism being capable of hydroxylating vitamin D compound or a enzyme produced from the microorganism, is disclosed.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: December 12, 1995
    Assignee: Mercian Corporation
    Inventors: Koji Takeda, Kiyoshi Kimura, Kazuhiko Okamura, Rokuro Okamoto, Joji Sasaki, Takashi Adachi, Sadafumi Omura
  • Patent number: 4975370
    Abstract: Mucor circinelloides f. griseo-cyanus IFO 4563 is cultivated in a medium containing 6-O-methylerythromycin A as a substrate to obtain 14-hydroxy-6-O-methyl-erythromycin A. This compound and its salt have anti-bacterial activity.
    Type: Grant
    Filed: April 28, 1987
    Date of Patent: December 4, 1990
    Assignee: Taisho Pharmaceutical Co., Ltd.
    Inventors: Joji Sasaki, Kazutoshi Mizoue, Takashi Adachi, Takatoshi Nagate, Shigeo Morimoto, Sadafumi Omura
  • Patent number: 4892821
    Abstract: A method for introducing hydroxyl groups into vitamin D compounds at 1.alpha.- and/or 25-positions by use of a solution containing the mycelium of Actinomycetales being capable of hydroxylating vitamin D compound or the enzyme produced from the mycelium, is disclosed.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: January 9, 1990
    Assignee: Taisho Pharmaceutical Co., Ltd.
    Inventors: Sadafumi Omura, Joji Sasaki, Akiko Mikami, Kazutoshi Mizoue